Object reference not set to an instance of an object

Help
1

Whenever I try to create a new flowchart or sequence, I get this error “Object Reference not set to an instance of an object”.

Also when I try to open an existing project I get an error “Workflow Designer encountered problems with your document”.

Please help.

2

Hi @Pratik

You need to provide default value to the variable.
Use debug and check for the variable which needs default value.

I believe this error occurs mostly when UiPath runs out of memory space.
Close all instances of Studio and open a fresh one.

Regards,
Rahamat

3

Hi
Please reinstall the packages through “manage packages”

4

Hi Rajkumar,

I uninstalled and re-installed all the packages but still the problem persists. Do you have any other approach ?

Thanks

5

Hi Rahamtullah,
“Object Reference not set to an instance of an object” I am getting this error when I try to create a new sequence or workflow.

“Workflow Designer encountered problems with your document” I tried restarting the studio multiple times but with no effect.

Can you think of any other solutions?

Thanks

6

Hi @Pratik,

“Object Reference not set to an instance of an object” - Can you please
share the workflow.

“Workflow Designer encountered problems with your document” - For me this
error got resolved after restarting Studio. There might be other
resolutions as well which other members on the forum can suggest.

8

this is a very common and generic error that means you are trying to use an object that has no value yet, for help we will need to see some activity code…

10

is this workflow file your real one or example? there are activities loose in there and arrow that goes for two ways… there are so many errors that i dont know where to start the help :frowning:

15

Hi @rahamtullah
image
I also get this kind of error while I debug my program…

16

Are you using ‘On Element Appear’ activity anywhere in project? This isn’t compatible with new UiPath studio. If you remove this activity/disable it, save the project. This should work and you shouldn’t get this error anymore.

Object reference not set to an instance of an object also occurs when you pass NULL values at runtime but if you are getting this while using studio then try above solution. Let us know if any issue?